StrongTypedId 2.2.1

StrongTypedId

A super small library for providing strong typed Ids (as opposed to using primitives).

The benefit of this is simple: You don't run the risk of accidentally using the wrong type of id. (e.g. sending a UserId into a query for products)

This works through the use of an abstract base class (StrongTypedId<TStrongTypedId, TPrimitiveId>) which is inherited to gain the id functionality.

This project is inspired by Andrew Lock's StronglyTypedId. However I needed support for .Net 5 and thus this project was born. It has since evolved to .Net 9.

Installation

I recommend using the NuGet package: StrongTypedId however feel free to clone the source instead if that suits your needs better.

Usage

Specify your class like this:

[StrongTypedIdJsonConverter<UserId, Guid>]
public class UserId: StrongTypedId<UserId, Guid>
{
	public UserId(Guid value) : base(value)
	{
	}
}

This specifies that the class UserId is in fact a Guid and can be used in place of a Guid. And that's basically all there is to it, now you just use UserId in place of Guid where you're dealing with an User' s Id.

You can omit the JsonConverter if you don't use json serialization.

Furthermore there are a couple of base classes available to you:

• StrongTypedValue for anything that's not an id, this supports string as a primitive value.
• StrongTypedId for anything that IS an id, this only supports struct types as primitives (therefore no strings).
  • Adds the static Parse(string) and TryParse(string, out TStrongTypedId) methods.
• StrongTypedGuid a further specialization of StrongTypedId.
  • Adds the static New() method for instantiating new ids with random values as well as the static Empty property.

Finally you can recognize a StrongTyped value by calling the extension method IsStrongTypedValue(). All strong typed values furthermore implements both IStrongTypedValue<TPrimitiveValue> as well as IStrongTypedValue (The latter being strictly a marker interface).

Documentation

Auto generated documentation via DocFx is available here: https://steffenskov.github.io/StrongTypedId/

Compatibility

Dapper.DDD.Repository

This can work without any extensions, however it's a bit simpler to use via the package StrongTypedId.Dapper.DDD.Repository.

Entity Framework

This is supported through the package StrongTypedId.EntityFrameworkCore.

WebAPI

This is supported through the use of the built-in JsonConverter.

MVC

This is supported out-of-the-box.

NewtonSoft.Json

This is supported through the package StrongTypedId.NewtonSoft.

Swagger

This is supported through the package StrongTypedId.Swagger.